Where do the microtubules of the spindle originate during mitosis in both plant and animal cells?
A) centromere
B) centrosome
C) centriole
D) chromatid
E) kinetochore
Answer: B) centrosome
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Consider the following two populations and the frequencies of alleles at the FGFR-1 locus. Allele 1 Allele 2 Allele 3 Allele 4 Population 1 0.25 0.25 0.25 0.25 Population 2 0.50 0.42 0.05 0.03 Which of the populations has greater genetic variation?
A. population 1 B. population 2 C. Neither; genetic diversity is the same for both populations.
In which of the following bones are the teeth anchored?
A) mandible and zygomatic bones B) mandible and maxilla C) maxilla and zygomatic bones D) mandible and sphenoid bone E) sphenoid bone and maxilla
The most common source of genetic variation in sexually reproducing organisms is
A. recombination of alleles through meiosis and fertilization. B. duplication of genes. C. duplication of chromosomes. D. mutation.
Periderm consists of mostly
A) epidermis. B) cork cells. C) endodermis. D) lateral meristem. E) undifferentiated cells.